//找出0-1000 的对称数 
let num=[...Array(1000).keys()].filter((i)=>i.toString().length>1&&i===Number(i.toString().split('').reverse().join('')))
console.log(num)
// [
//     11,  22,  33,  44,  55,  66,  77,  88,  99, 101, 111, 121,
//    131, 141, 151, 161, 171, 181, 191, 202, 212, 222, 232, 242,
//    252, 262, 272, 282, 292, 303, 313, 323, 333, 343, 353, 363,
//    373, 383, 393, 404, 414, 424, 434, 444, 454, 464, 474, 484,
//    494, 505, 515, 525, 535, 545, 555, 565, 575, 585, 595, 606,
//    616, 626, 636, 646, 656, 666, 676, 686, 696, 707, 717, 727,
//    737, 747, 757, 767, 777, 787, 797, 808, 818, 828, 838, 848,
//    858, 868, 878, 888, 898, 909, 919, 929, 939, 949, 959, 969,
//    979, 989, 999
//  ]